Assembling apparatus



May 3, 1932- s. NJJoHNscN E1' AL 1,856,768

ASSEMBLING APPARATUS Filed June l5, 1931 3 Sheets-Sheet 2.,

May 3, 1932. s'. N. JOHNSON r-:T AL 1,855,768

.VSSEMBLING APPARATUS 'Filed June 15; 1931 s sheets-sheet s /zg/Z /26//545 /5/22 /7 923,35

/4-0 /zv i 0,26 /za /26//5 a9 6795 Z v /0/ 9747096 7l 5MM MM M 90M M M@www4 tio Patented May 3, 1932 essere SGURD N'. JOHNSON ANI) CHARLES E.BIRCH, OF ANDERSON., INDIANA, ASSIGNORS T0 DELCO-BEMY CORPOEATIGN, OFANDERSON,

WARE

ASSEMBLING Application filed. .Tune 15,

rlhis invention relates to machines for assembling a rod membei with aplate member by press-fitting both members together and also forsubsequently testing the tightness of fit between these two members.

One ofthe objects of this invention is to provide a machine of thischaracter which shall be simple in construction, easy to operate,reliable in operation and eliminate waste of time.

In order to accomplish this the present invention provides a machinehaving a workliolder for supporting both membersv to be assembled andhaving means for firmly hold- .l ing one of the assembled members whileapplying a force to the other members tending to disassemble thepress-fitted members, an assembling device eiecting relative movementbetween both members, a testing device which applies a force to one ofthe assembled members tending to disassemble them, and a contact meanswhich. renders the disassembling device inoperative when the assemblingdevice is operati-ve and vice versa.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the followingdrawings wherein a preferred embodiment of one form of the presentinvention is clearly7 shown.

ln the drawings:

Fig. 1 is a perspective view of the machine embodying the presentinvention.

2 is a fragmentary perspective view -.f' of the machine similar to Fig.1 but showing a different position of certain parts of the machine.

Fig. 3 is a cross sectional view of the machine showing the work andtest plunger in idle position, the two sectional views of the valve aretaken on the line 36E-3a and 236-3?) of Fi 6. section Sli-3?) beingshown under- .eatli section '3a- 3a in a diagrammatic maner for betterillustration of the communicaof the different valve chambers.

i l is a cross sectional View of the machine similar to Fig. 3, however,showing the work plunger at the end of the work stroke, the valve isshown in the same manner as in so Fig. 3 only in diii'erent position.

INBIANA, A. CORPORATION OF DELA- AEPARAT'US 1,931. Serial. No.V 544,636.

Fig. 5 is a cross sectional view of the machine similar torFigs. 3 and4C, however,.show. ing the work plunger in such position as to allow thetestl plunger to act upon the assem- 'led work, the valve is shown inthe same manner' and corresponding in position with that of Fig. 3. A

Fig. 6 is a sectional View of the valve taken on the lines 6 6 of Fig.5.

Fig. 7 is a sectional view of the valve taken on the lines 7 7` ofk F 5.

Fig. 8 shows a distributor shaft and a weight plate in. disassembledposition, in which position these parts will be inserted in thek workholder.

Fig. 9 is a plan. View of the members to be assembled.

Work' holder Referring to the drawings a table 10 of suit- ,A abledesign supports a bracket 11 through in` terposed wooden blocks 12; aplurality of bolts 13 projecting through lugs 141 of the bracket 11.secures the latter tothe table 10 by nuts: 14a. Guide pieces 15 and 16,overlap A the ends of a base plate 17 and allow. for limited verticalmovement of a pad 18. A. bolt 19 projects through each of the guidepieces 15 and 16 and isthreaded into the bracket 11, thus securing theguide pieces 15 and 16 and the base plate 17 to said bracket 11 and alsoconfining the pad 1Sv to its limited vertical movement.. A pair ofsprings 20, diagonally situated with respect to the bottom of the pad 18and located within aligned annular recesses 21 and 22 of the base plate17 and the pad 18". respectively, normally maintain the pad 18 in anuppermost position, while a pair of dowel pins 23, situated equallyspaced from the spring and let in the base plate 17. are slidablyreceived by holes 24 of the pad 18 for preventing lateral movement ofthe same. A. plurality of locating pins 25 let in the top of the workholder 18 are received by slots 26 of a weight plate 27 to be assembled,thus locating the weight plate 27 with respect to the pad 18.

The pad 18 also provides a recess 28 adapted to receive the collar '29of a distributor shaft 30 and locates the latter with respect to theweight plate 27 A narrow slot. 31 immediately beneath the recess 28provides sufiicient space for the distributor shaft 30 and a shoulder 32formed b v the step from the recess 28 to the narrow slot 31 supportsthe collar 29 and thereby the distributor shaft 30.

Located within a bore 33 of the base plate 17 is a reduced portion 34 ofa member 35 which is welded to the base plate 17 as at 36. This member35 provides a slot 37 which is in longitudinal alignment with recess 28of the work holder 18 and adapted to confine the shaft 30 to horizontalmovement in one direction only, to wit from where the shaft and theplate to be assembled are inserted in the pad 18 and the member` 35.

The member 35 has to its lower end secured by welding as at 38 orotherwise a cylindrical body 39 having a central aperture 40 withinternal square threads 41 or any other type of threads suitable for theusage in this particular combination. The internally threaded apertureis adapted to receive the correspondingly threaded portion 42 of a plug43 which provides a threaded longitudinal center passage 44 adapted toreceive a threaded supporting stem 45, adjustable within the plug 43 inany desired posiiion and secured in such adjusted position thereto by alocknut 46. The stem 45 projects through a hole 47 in the bottom 48 ofthe cylindrical body 39 and into the slot 37 of the member 35 and isadapted to prevent longitudinal movement of the distributor shaft 30when the press fitting operation takes yplace as will be explainedlater. A handle 49 secured to the plug 43 in any suitable manner allowsfor manual longitudinal shifting of the plug 43 and thereby engagementor disengagement of the supporting stem 45 with the distributor shaft30.

Assembling device The bracket 11 also provides an extending platform 50whichterminates into a boss 51. A flange 52, integral and concentricwith the boss 51 is adapted to support a cylinder 53 which is securedthereto by bolts 54. A head 55 is firmly pressed against the top 56ofthe cylinder wall 57 by bolts 58 which project through. holes 59 inthe head 55 and are thread-edly received by a flange 60 of the cylinder.E3-thus sealingl the cylinder. The cylinder 53 as well as the head 55provide bores 61 and 62, respectively, adapted to guide a Work plunger63. .A central bore 64 being in axial alignment with the bores 61 and 62and extending through the flange 52 and the boss 51 is adapted toslidably support the work plunger 63, the comparatively long bore 64also taking the place of an otherwise necessary packing gland, bvsuiiiciently sealing the bottom side of the cylinder 53. rIhe head 55provides a packing chamber 65 for receiving a packing gland 66 while astuffing box 67 enters with its cylindrical portion 68 the packingchamber 65 and retains the packing 66 in tight engagement with the workplunger 63 thus establishing concealment of the head side of thecylinder 53. A plurality of bolts 69 which project through holes 7 0 ofthe stuffing box 67 are threadedly received by the head 55' and thussecure the stuffing box 67 to the head 55. The boss 51 of the bracket 11thrcadedly receives a guide pin 71 (see Fi 1 or adapted to project intoa longitudinal groove 72 of the work plunger 63, to prevent rotation ofthe same about its own axis.

|The work plunger 63 comprises an enlarged portion 73, part of which isthreaded as at 74 and adapted to journal three layers of any suitablepiston material which together form a piston 74a. A collar 7 5 of thework plunger' 63 supports the piston 74a while a nut 75a, received bythe threaded part 74 of the enlarged portion 73 secures the piston 74ato the collar 75 of the work plunger 63.

The assembling plunger 63 also carries at its lower end a press head 76which is threaded upon the plunger 63 as at 77. This press head providesa slot 78 which is in longitudinal alignment with the recess 28 of thepad 18 and adapted to provide room for the diametrically smallestportion 79 of the distributor shaft 30, while the press head 76 itselfengages thetop of the weight plate 27 during the press fitting operationas clearly shown in Fig. 1.

Compressed fluid, in the present instance compressed air has beenselected as means for actuating the assemblingv plunger 63. such airbeing conducted from any suitable supply (not shown). Means forcontrolling the air pressure iuid will be described later.

Testing device The assembling plunger 63 is hollow and slidably supportsanother plunger 80. hereinafter called the test plunger, which providesan intermediate collar 81 resting against the upper end of theassemblingl plunger 63. A spiral spring 82, surrounding the test plungerand bearing against the collar 81 also bears against the bottom of aspring cage 83 which isthreaded upon the assembling plunger 63 as at 84.thus yieldingly maintaining the collar 81 of the test plunger 80 inengagement with the assembling plunger 63. The test plunger 8O will bearagainst the top of the distributor shaft 3.6 when the press head 76 isapproaching the weight plate 27. Wvhile so doing. the test plunger 80merely presses the distributor shaft 30 against its supporting stem 45.However. when the press head 7 6 withdraws from the just assembledmembers. the test plunger 80 continues for some definite time to, pressagainst the top of the dis-tributar shaft 3() and this time the testplunger will tend to separate the just assembled members. sincecoincidentally with the withdrawal of the assembling plunger 63 thedistributor shaft support-ing stem 45 has been withdrawn as will beexplained later. The pad 18 will follow the withdrawing stem 45 untilstopped by the base plate 17, in which position the pad 18 merelysupports the weight plate 27 but not the distributor shaft 30. Theentire predetermined pressure of the test plunger is now imparted fromthe distributor shaft 30 through the press fitted joint between bothmembers to the weight plate 27, firmly supported by the pad 18 which inturn is firmly supported by the base plate 17 as mentioned. Thepredetermined amount of pressure constitutes a sufficient safety factorof the tightness of fit between the assembled members, and if suchtightness of lit is inadequate, the applied pressure of the test plungerwill disassemble the members.

Control mechanism An L-shaped plate 85, comprising legs 86 and 87, issecured to the cylindrical body 39 by welding as at 88 or otherwise, andleg 87 thereof is adapted to support a valve body 89 having openpassages 90, 91, 92 and a plugged passage 93, the passages 90, 91 and 92respectively matching with holes 93, 94 and 95 of the leg 87 of theplate 80.

Air may pass from a chamber 96 to a chamber 97 through a hole 98 in avalve seat 99 closed by a valve 100 mounted on a stem 101 and normallymaintained in closed position by a spiral spring 102, and then to achamber 103 through a passage 104 (see Fig. 7 connecting the chambers 97and 103. JAir may also pass from the chamber 96 to a. chamber 105through an irregular passage indicated by line 106, connecting bothchambers, then to a chamber 107 through hole 108 in a valve seat 109closed by a valve 110 mounted on a sleeve 111 and normally maintained inclosed position by a spiral spring 112, and may finally pass to achamber 113 through a passage 114 connecting the chambers 107 and 113 asclearly shown in Fig. 6.

Air may pass from the chamber 103 to a chamber 115 through a hole 116 ina valve seat 117 closed by a valve 118 mounted on a stem 119 andnormally maintained in closed position by a spiral spring 120, then maypass through a passage 121 and finally escape through a vent 122 to theatmosphere as clearly shown in Fig. 7. Air may pass from the chamber 113to a chamber 123 through a hole 124 in a valve seat 125, closed by avalve 126 mounted o-n a stem 127 and normally maintained in closedposition by a spiral spring 128, then may pass from chamber 123 througha passage 129 and finally escape through the vent 122 to the atmosphereas clearly shown in Fig. 6.

V The lower ends of the valve stems are engageable with a latch lever130, fulcrumed on a pin 131, carried by brackets 132 extending from thevalve body 89. An extension 133 of the latch lever 130 is adapted to beengaged by adjusting screws 134 and 135 threadedly received by lingersor lugs 136 and 137, respec- ,7

tively, which are integral with the plug 43. Therefore, when the handle49 is shifted from the position shown in Fig. 2 to that shown in Fig. 1,the adjusting screw 134 will shift the latch lever 130 into suchposition that the valves and 118 will be closed due to the tension oftheir respective spiral spring while the valves 126 and 100 will beopened by the latch lever 130 against the tension of their respectivespiral spring, as clearly shown in Fig. 4. Compressed air is nowadmitted to flow from the supply of compressed air (not shown) through asuitable medium, such as a hose or pipe 138 to the entry passage 90 ofthe valve body 89, then through its following passages and chambers 96,99, 98, 97, 104, 103 and 91, and from there through a hose or pipe 139,to the head side of the cylinder 53. The expanding compressed air in thehead side of the cylinder 53 pushes the assembling plunger 63 from theposition shown in Fig. 3 to that shown in Fig. 4.

Coincidentally with the movement of the assembling plunger, air in thebottom side of the cylinder 53 must be admitted to escape the advancingplunger 63. Such air passes through a pipe or hose 140, connecting thebottom side of the cylinder 53 with the passage 92 of the valve body 89,then from this passage through its following passages and chambers 113,125, 124, 123, 129 and out to the atmosphere through the vent 122.

When the handle 49 is shifted from the position shown in Fig. 1 to thatshown in Figs. 2, 6 and 7, the adjusting screw 135 will shift the latchlever 130 into such position that the valves 100 and 126 will be closeddue to the tension of their respective spiral spring, while the valves118 and 110 will be opened by the latch lever 130 against the tension oftheir respective spiral spring as clearly shown in Figs. 3, 6 and 7. Airwill then be admitted to flow from the supply of compressed air throughthe medium 138 to the entry passage 90 of the valve body 89, thenthrough the Valve body 89 and particularly through the followingpassages and chambers 96, 106, 105, 109, 108, 107, 114, 113, 92 andfinally through the hose or pipe 140, connecting the last said passage92 with the bottom side of the cyl'- inder 53. rPhe expanding air inthis part of the cylinder 53 pushes the assembling plunger 63 from theposition shown in Fig. 4 to that shown in Fig. 3. Coincidentally withthe flowing of compressed air to the bottom side of the cylinder 41 andthe movement of the work plunger 49, air from the head side of thecylinder 53 must be admitted to escape the advancing plunger 63 throughthe pipe or hose 139 then through the valve body 89 and in particularthrough its following passages and Ico chambers 91, 103,117,11G,'115,121 and out to the atmosphere through the vent 122.

lt will be readily understood from the description so far that a manualshifting of the handle 49 causes engagement or disengagement of theadjustable distributor shaft supportingstem 45 with or from thedistributor shaft 30 and at the same time controls the downwardmovement, respectively, upward movement of the assembling plunger 63.

Mode of operation The sequence of operations of the present ifsentionwill be best understood by referringl to Figs. 1 to 5 inclusive.

Referring nist to Fig. 3, the machine is shown in a state of rlhe workplunger 63 with the press head 7 6 and also the pad 18 are in anuppermost position, the former due to the pressure of compressed air inthe bottomside of the cylinder 53 and the latter' due to the tendencv ofthe springs 20. The operator loosely assembles the weight plate 27 andthe distributor shaft 30 in substantially the same manner as shown inFig. 8, and inserts them into the pad 18 andmember 35 in such mannerthat the slots 26 of the weight plate 27 are received by the locatingpins 25 and the collar 29 of the distriautor shaft by t e recess 28 ofthe work holder pad 13, and tne distril'xuor sh: ft 3() itself confinedto the shaft surrounding work holder member 35.

The operator, having done these introducing manipulations now starts themachine by shifting handle 49 from the position as shown in Fig. 2, tothat shown in Fig. 1, which rotary motion is imparted to the threadedplug 43 and results in a longitudinal movement of the plug 43 within thecylindrical body 39 and therewith engagement of the adjustable suppoiing stem th the lower end of the distributor shaft bf).

Thel rotary motion of the handle 49 also results in a shifting of thelatch lever by the adjusting screw 134 carried by the longitudinallyextending finger 136 of the plug 43 into such position which allowscompressed air from a suitable supply (not shown) to pass through thepipe or hose 138 to the entrance passage 90, then through the passa-gesand chambers of the valve body 83, as earlier explained, then through apipe or hose 139 to the head side of the cylinder 53 as clearly shown inFig. 4. The admitted compressed air expands and moves the asi plm I i'G3 and therewith the press head 7 6 slowly toward the work, but beforethe press head 76 engages the top of the weight plate 27, the testplunger 80 will engage the top of the distributor shaft 30 and impartaxial pressure to said shaft 30 which, however, is taken up by thesupporting stem or stop 45. Air in the bottom side of the cylinder 53 isallowed to esca-pe the advancing plunger in the earlier describedmanner.

At the time the test plunger 80 engages the distributor shaft 30 and istherefore prevented from further movement with the assembling plunger,the `latter has not yet reached the end of its half stroke, but keeps uon moving and during that time the press head finally engages the weightplate 27 and performs the press fitting operation by forcing the centerhole of the weight plate 27 over the l-:nurled portion 19 of thevertically arrested distributor shaft 30 until its collar 29 preventsany further movement of the weight plate 27 as well as of the press head76, and therefore, of the assembling plunger n also.

The assembling or press fitting operation of the machine is nowcomuleted and the operator shifts the handle 49 from the position shownin Fig. 1, back to the initial position as shown in Fig. 2. This causeswithdrawal of the distributor shaft supporting stem 45 coincidentallywith the shifting of the handle 49, as has been adequately explained,and also causes the adjusting screw 135, carried by the longitudinallyextending finger 137 of the plug 43 to shift the latch lever 130 fromthe position shown in F ig. 4 to that shown in Fig. 5 which positionallows compressed air from the supply to pass through the medium 138 tothe entrance passage 90 of the valve body 89 then through its passagesand chambers as earlier explained, and finally through a pipe or hose140 to the bottom side of the cylinder 53. The admitted compressed airin the bottom side of lthe cylinder 53 expands of the distributor shaft30 earlier than the assembling plunger, when the latter engages theweight plate 27, during its first half stroke. When therefore assemblingplunger starts to withdraw from the assembled work, it has first to takeup its extra motion of the first half stroke with respect to the testplunger 80. During that time the spring pressed test plunger 80 willwith its entire force press against the top of the t ie distributorshaft 30 which will give way l longitudinally since the distributorshaft supporting stem has been withdrawn and the stronger test plungeractuating spring 82 overcomes the much weaker pad supporting springs 20.the assembled work, continues until the bottom of the movable pad 18rests against the base plate 17. In this position the lower end of thedistributor shaft 30 has not yet reached the withdrawn suprlhis givingaway of .111:

porting stem 45 and since the test plunger 80 continues to press aXiallywith full Vforce against the distributor shaft 30, this full force mustbe transmitted from the distributor shaft through the just press fittedjoint to the weight plate 27 and then to the new firmly supported pad18. lf the joint is not tight enough, the predetermind force of the testplunger S0 will sepa-rate the distributor shaft 30 and the immovableweight plate 27 and thus enable the operator to easilydistinguishfbetween satisfactory and inferior work.

Fig. 5 shows the test plunger acting with its full force upon thedistributor shaft 30 and tending to disassenible the work, but thewithdrawing work plunger will soon engage the collar 81 of the testplunger 8O and raise the latter out of engagement with the worlr. Since,however, the withdrawal of the plunger is delayed with respect to thewithdrawal of the distributor shaft supporting stem due to the slowerresponse of compressed air as means for actuating a plunger comparedwith the bodily response of the supporting stem 45, such delay must beadded to the time which it takes for the assembling plunger to travelthrough the distance between the collar 8l and the assembling plunger 63as shown in Fig. 5.

inferior work out of the work holder and ini serts new members to beassembled in the manner described.

From this it may be seen that this invention embodies a machine whichnot only performs the press iitting operation in a satisfactory andsimple manner, but at the same time undertakes to test each and everypiece of assembled work by actually dislocating one of the inadequatelypress iitted members with respect to the other press fitted meinber.rlhe machine of the present invention therefore does the work of aninspector in jpossibly a more eiiicient and satisfactory manner than theinspector would be able to do, and does such testing work during theordinary time of performing the assembling operation without requiringany skill or additional manipulation of the operator.

lVliile the form of embodiment of the present invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming lwitliin the scope of theclaims which follow.

What is claimed is as follows:

1. A machine for assembling a. rod with a plate and for testing thetightness of fit between the assembled members, comprising incombination, a work holder for supporting both members to be assembledand having means for firmly holding one of the assembled members whileapplying a force to the other member tending to disasseinble themembers, an assembling device effecting relative moven'ent between bothmembers, a testm ing device which applies force to one of the einbledmembers tending to disassemble them, and a control means which rendersthe testing device inoperative when the assembling device is operativeand vice versa.

2. A machine for assembling a rod with a plate and for testing thetightness of lit be tween the assembled members, comprising incombination, a work holder for holding one of the members while theother member is moved relative thereto for assembling purposes, saidwork holder including means for holdin@ one of the members whileapplying a force to the other member tending to separate the assembledmembers, a device for applying an assembling force to the movablemember, a testing device for applying a force to one of the assembledmembers tending to separate them, and a control means for rendering tlieassembling device inoperative when the testing device is operative andvice versa.

3. i machine for assembling a rod with a plate and for testing thetightness of fit between the assembled members, comprising incombination, a work holder including means for holding a rod memberwhile moving the plate member relative thereto for assemblingpurposesand means for holding the plate member while applying a force tothe rod member tending to disassenible the assembled members, a devicefor applying anassembling force to the plate member, a testing devicefor applying a predetermined force to the assembled rod member but in adirection relatively opposite to that required for as sembly, and acontrol means for rendering the testing device inoperative when theassembling device is operative and vice versa.

4. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder including means for holding a rod memberwhile moving the plate member relative thereto for assembling purposesand means for holding the plate member while applying a force to the rodmember tending to disasseinble the assembled members, a device forapplying an assembling force to the plate member, a testing de vice forapplyingapredetermined force to theV assembled rod member but in adirection relatively opposite to that required for assembly,

means of the work holder to hold the rod all" cluding means for holdinga rod while movmeans or the work holder to hold the plate member and forrendering the testing device operative.

5. A' machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder including means for holding a rod whilemoving the plate relative thereto for assembling purposes and means forholding the plate while applying a force to the rod tending to separatethe assembled work, a device for applying an assembling force to theplate, a spring for applying a predetermined testing force to theassembled rod but in a direction relatively opposite to that requiredfor assembly, and a control means for rendering the spring inoperativewhen the assembling device is operative and vice versa.

6. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder including means `lor holding the rod andmeans for holding the plate a device for applying an assembling force tothe plate, a spring Jfor applying a predetermined testing force to theassembled rod but in a direction relatively opposite to that requiredfor assembly, and a control means for rendering the spring inoperativeand causing the rod to be held by said means of the work holder when theassembling device is operative or for rendering the assemling meansinoperative and causingthe plate to be held by the said means of thework holder when the spring isoperative.

'7. A machine for assembling` a rod *ith a plate and for testing theassembled members, comprising in combination, a work holder ining theplate relative thereto for assembling purposes and means for holding theplate while applying a torce to the rod tending to separate theassembled work, a power oper- -ated assembly plunger for moving theplate,

a testing device which applies a predetermined orce to the assembled rodbut in a direction relatively opposite to that required for assembly anda control means for rendering the disassembling device inoperative whenthe assembly plunger is operative and vice versa.

8. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder including means for holding the rod and meansfor holding the plate, a power operated assembly plunger Jfor moving theplate, a testing device which applies a predetermined force to theassembled rod but in a direction relatively opposite to that requiredfor assembly, and a control means for ellecting release of theassembling plunger for causing the rod to be held stationary by the saidmeans of the work holder and for rendering the spring inoperative, orfor rendering the assembling plunger inoperative and coincidentallytherewith causing the plate to be held by the said means of the workholder and rendering the spring operative.

9. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder having a stop for supporting the rod and apad for supporting the plate, an assembly device for applying anassembling force to the plate, a testing device for applying apredetermined force to the assembled rod but in a direction relativelyopposite to that required for assembly, and a control means forrendering the assembling device operative, for causing the stop tosupport the rod to resist movement of the plate, and for rendering thetesting device inoperative, or for rendering the testing deviceoperative, coincidentally therewith causing the pad to support theplate, and for rendering the assembling device inoperative.'

10. A machine for assembling a rod with a plate and for testing thetightness of fit between the assembled members, comprising incombination, a work holder having a stop for supporting the rod and apad for supporting the plate, a power operated assembling plunger ormoving the plate, a testing device for applying a predetermined force tothe assembled rod but in a direction relatively opposite to thatrequired for assembly, and a control means for releasing the poweroperated assembling plunger, for causing the stop to support the rod,and for rendering the testing device inoperative, or for causing thestop to withdraw from the rod, coincidentally therewith rendering thetesting device operative and for causing the pad to support the plate.

11. A machine for assembling a rod with a plate and Jfor testing thetightness of fit between the assembled members, comprising incombination, a work holder having a stop for supporting the rod and apad for supporting the plate, an assembly device tor applying anassembling force to the plate, a spring for applying a predeterminedtesting force to the assembled rod but in a direction relativelyopposite to that required for assembly, and a control means Jriorrendering the assembling device operative, for causing the stop tosupport the rod to resist movement of the plate, and for rendering thespring inoperative, or for causing the stop to withdraw from the rod,coincidentally therewith rendering the spring operative, causing the padof the work holder to hold the plate and rendering the assembling deviceinoperative.

12. A machine for assembling a rod with a plate and for testingthetightness ot lit between the assembled members, comprising incombination, a work holder having a stop tor supporting the rod and apad for supporting the plate, a power operated assembling plunger formoving the plate, a spring ior applying a predetermined testing force tothe assembled rod but in a direction relatively opposite to thatrequired for assembly, and a control means for rendering the poweroperated assembling plunger operative, causing the stop to support therod to resist movement of the plate and rendering the springinoperative, or for causing the stop to withdraw from the rod andcoincidentally therewith rendering the spring operative, causing the padof the Work holder to hold the plate stationary and rendering the workplunger inoperative.

13. A machine for assembling a rod with a plate and for testing thetightness of fit between the assembled members, comprising incombination, a work holder including a pad which is movable with theplate and a stop for supporting the rod, a device tor applying anassemblingl force to the plate, a testing device which applies apredetermined force to the rod but in a direction relatively opposite tothat required for assembly and a control means for rendering theassembling device operative, causing the stop ofthe work holt er tosupport the rod and rendering the testing device inoperative, or forcausing the stop to release the rod, coincidentally therewith renderingthe testing device operative and causing the pad of the work plunger tohold the plate stationary.

14. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled member, comprising incombination, a work holder including a pad which is movable with theplate and a stop for supporting the rod, a power operated assemblingplunger for moving the plate, a testing device which applies apredetermined torce to the rod but in a direction relatively opposite tothat required for assembly, and a control means for releasing the poweroperated assembling plunger, causing the stop of the work holder tosupport the rod, and rendering the testing device inoperative, or forcausing the stop to withdraw from the rod and coincidentally therewithrendering the power operated assembling plunger inoperat-ive and causingthe pad of the work holder to hold the plate stationary to resist theforce of the testing device.

15. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled member, comprising A incombination, a work holder including a pad which is movable with theplate and a stop tor supporting the rod, a device for applying anassembling force to the plate, a spring for applying a predeterminedtesting force to the rod, but in a direction relatively opposite to thatrequired for assembly, and a control means for rendering the assemblingdevice operative, causing the stop of the work holder to support the rodand rendering the spring inoperative, or for causing .the stop towithdraw from the rod and coincidentally therewith rendering theassembling device inoperative, rendering the spring operative, andcausing the pad of the work holder to hold the plate stationary.

16. A machine for assembling a rod with a plate and for testing thetightness of lit between the assembled members, comprising incombination, a work holder including a pad which is movable with theplate and a stop for supporting the rod, a power operated assemblingplunger for moving the plate, a spring :tor applying a predeterminedtesting torce to the rod, butin a direction relatively opposite to thatrequired :tor assembly, and a control means for rendering the assemblingplunger operative, causing the stop of the work holder to support .therod and rendering the spring inoperative, or for causing the stop towithdraw from the rod and coincidentally therewith rendering theassembling plunger inoperative, rendering the spring operative and alsocausing the pad of the work holder to hold the plate stationary. V

17. A machine for assembling a rod with a plate and :tor testing thetightness of fit between the assembled members, comprising incombination, a work holder including a pad which is movable with theplate and a stop for supporting the rod, a fluid pressure operatedassembling plunger for moving the' plate while the rod is heldstationary, a valve for controlling the assembling plunger, a spring forapplying a predetermined testing force to the rod, but in a directionrelatively opposite to that required for assembly, and a control meansfor shifting the valve in such position which renders the assemblingplunger operative, for causing the stop of the work holder to supportthe rod and :tor Vrendering the spring inoperative, or for causing thestop to withdraw from the rod for causing the pad ot the work holder tohold the plate stationary and for shitting the valve in such positionwhich renders the assembling plunger' inoperative and renders the springoperative.

18. A machine for assembling a rod wit-h a plate and for testing thetightness of it between the assembled members, comprising incombination, a work holder including a pad which is movable with theplate and a stop for supporting the rod, a fluid pressure operatedassembling plunger for moving the plate while the rod is heldstationary, a valve for controlling the assembling plunger, a spring forapplying a predetermined testing force to the rod, but in a directionrelatively opposite to that required for assembly, and a control membershiftable in an inclined plane about an axis parallel to the axis of therod,

for usingl one component of the actual movement thereof to shift thevalve in such position which renders the assembling plunger operativeand the spring inoperative, und for usino' the other com onent of suchmovement of the member to move the stop into engagement with the rod, orfor using the other component of such movement to Withdraw the stop fromthe rod and for using the one component of such movement to shift thevalve into such position which renders the assembling plungerinoperative and coincidentally therewith renders the spring operativeand causes the pad of the workholcler to hold the plate stationary.

In testimony whereof We hereto aix our signatures.

SIGURD N. JOHNSON. CHARLES E. BIRCH.

